Centering-director for record-disks.



J. M. W. KITCHEN. CENTERING DIRECTOR FOR RECORD DISKS.

APPUCATION FILED MAR. 6, I916.

Patented May 22, 1917.

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CENTERING-DECTOR FOR RECORD-DISKS.

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Specification or Letterslatent.

Patented May as. iera Application filed March 6, 1916. Serial No. 82,335.

To all cokom it may concern;

Be it known that I, J osnrn Moses WARD Kiroman', a citizen of the United States, re-

siding in the city of East Orange, county of Essex, State of New Jersey, have invented an Improvement in Centering-Directors for Record-Disks, of which the following is a specification.

The object of thisinvention isto facilitate the placing of record-disks on the retaining and .centering shaft projection ofv the revolving horizontal turn-table of socalled ftalking machines. As isknown, it is frequently dificult in lacing an'opaque recorddlsk on itsturn-ta le, to at once'bring the perforation in the center of the record-disk, over the centering and retaining shaftv projection', inasmuchas there is no reliable and satisfactory visual means ofdirecting the movement-of the disk to the exact centering point .of the turn-table, which is the center of the retaining shaft projection.

Thisfinveiifion overcomes that difficultyby at onceinforming the eye as to the center 'ing direction in which to move the disk to bringthe perforation of the disk directly over the-centering shaft projection. In accomplis'hjngthis. aim, l[ prefer to have lines and pointers drawn on the frictional pad of, r or upper surface of the machin'es'turn-ta'ble,

record diskshould be, immediately moved to arrive at the-ppsition for imposition of the perforation-ofthe record disk onto the centering shaft prejjction. I also sometimes in.

'' dicateby circularly placed marksor lines on the frictionalpadisisurface of the turn-table, placed "at the same distance from the center of the turn-table',-as would'be the peripheries of the record-diskaf Showing how the recorddisks should beipla'cedi "Some of-the turntables which are used for revolving recorddisks are of the same-{diameter as the diame ter of some record-disks, but some recorddisks are larger than th'e turn-table used, whileothers are smaller.-.' :Hence, I preferably provide both 'methodsfor indicating the position of the cent ring haft p jeet ons,j

placement'position of disks of di all directions for a both those immediately adjacent to the cen termg retaining shaft, and those which circumferentially indicate the position of the disks when in use. .It is obviousthat if the periphery of the record disk is the same as the circumferential indicating marks, the juxtaposition of thetwo would indicate the position of the center point of the turn-tables axial shaft. These markings may be placed on the felt or other surface pad of the turn-table, or partly on that surface pad and partly upon a removable thin disk or plaque placed'upon and centeredby the platform pivot. Or, they may be on" only one removable centering disk-director plaque.

Centering directing marks, such as I may use,.: indicate in the accompanying drawing; m which, Figure 1 isa plan view of the 75 ble with a central directional plaque in pos1- upper surface of a talking machine turn-tation; and Fig. 2 is a vertical cross sectional view ofFig. 1 taken through its center, and

having an ordinary record-disk in position; and A is the periphery of a talking machine turn-table; and A and A are circumferenthe em- I erent di tial indicating marks representing ameters. B represents a removable centering plaque or disk, and also, an-imprintment immovably attached to the turn-table pad; B is the-"perforation of the disk or plaque indicator.

ing;marks,.lines, and directing pointers are B is the .dark colored background on which the centering indicataflixed; O arethe pointers indicating the direction of the turn-tables' projecting shaft and D are radiating lines to be followed in arriving at the centering pointfor placing the record-disk. In Fig. 2, 'E is the centering projecting axial shaft of the turn-table. F is a record-disk in position; F is the usual, centrally placed, depression,

found in a recorddisk, and F is jthe frictional turn-table pad. It is obviousthat' with the u'se'of my device in almost whatever I position the perforationof the record-disk. maybe first placed'in relatlon to the center" 'oint,'=a pointing indicator and leadingline 'will be at once seen through the disk perforation, which. if followed along any ofthe lines'in the direction indicated by the point "ers, the centering point will be quickly found. I

Inasmuch as inp'lacing a record dlsk in position, very little light gains access be-' tween. the record-disk and the machineplap unharmonious colors in the body surface of.

the-indicating disk B, and in the directing pointers C and lines D; so that these pointers and lines may easily be visually perceived when they, as is usual, are poorly lighted. I prefer to provide a black back ground, and a brilliant yellow gilt for the indicating lines and direction pointers; but green and white, yellow and blue, or other markedly contrasting colors may be used.

As has before been stated, these centering directing pointers and lines may be imprinted upon the surface of the turn-table pad, although that usually has a poor printing surface 5 but in case the centripetal means of direction is removable, I prefer that it should be of thin sheet metal, coated with baked enamel in proper c0lors;'though aper, cloth, leather or other material can e used for this purpose. The upper surface of the indicating disk plaque preferably should not have any coloring or imprinting on it to interfere with the directorial functional purpose of the disk plaque; but the under surface can be imprinted and decorated in any desirable manner, giving directions how to use the disk, its trade name, manufacturer, etc.

In case a removable centrally placed disk is used, it will have a diameter suitable to fit in the depressed center which is usually formed in record-disks, and on which are imprinted the title of the record, etc. It is obvious that this central part of the recorddisk may have perforations, which will further facilitate the seeing of the indicating marks through the admission of more light through the record disk; though it is usually preferable to have the entire recorddisk integrally of one material in order to increase the strength of the record-disk.

The marks and lines on the means I use in directing record-disks to their seat, are preferably so intermitted as to continuity as to allow of their imposition on the'means through the'use of a stencil. If there is stenciling on the surfacing frictional material composing the pad, I may use a stenciling'fluid that will chemically change the color of the surfacing felt or other material on the platform.- The invention comprises any method of applying permanently directorial marks on the turn-table, including lines adhering to or integral with the mately said centerin turn-table below or not much above the level of the frictional covering, and which might be seen through a perforation or perforations of the frictional covering of a suitable size. Or, the directorial means may be set into a perforation in the frictional material, or it may be placed over or upon the frictional material. In any case, it is preferable that the directorial indicator shall not have its surface touch any part of the surface of the record-disk, inwhich case the, revolution of the record-disk would be still effected by contact with all of the outer areas of the frictional material covering the turntable as is at present commonly the case."

Having now disclosed the nature of the invention, what I claim as new is:

l. The combination with a talking machine turn-table having a projecting axial shaft for centering a centrally perforated record-disk, of n'ieans for visually directing the centering and placing of record-disks on the projecting shaft, which means is located on the exposed upper surface of said'turntable in close juxtaposition to said shaft and lea-ding thereto and pointing to the center of said shaft.

2. The cmnbinatirm with atalking machine tlIl'Il-l'2ll')l0 havinga projecting axial centering shaft, of a removable centering indicator having lines and pointers leading to and pointing to the center of said indicator and said shaft, said lines and pointers on said indicator, when said indicator is in position, starting from the external periphery of said indicator and extending to the external periphery of said shaft.

3'. In a centering indicator for facilitating the emplacing of a record-disk 0n the centering and retaining means of a talking machine turn-table, a flat disk-plaque having a centering perforation and interrupted lines and indicating pointers in the interruptions, and extending from the circumferential sur face-areas of the disk-plaque to approxiperforation.

4. In a centering lndicator for a talking machine turn-table having a centering means, directing means pointing to the center of said centering means of the turntable from a plurality of directions with re spect to said centering means and extending to a position closely in apposition with said centering means.

JOSEPH MOSES WARD KITCHEN. Witnesses:

GEo. L. WHnELooK, BEATRICE MIRVIS. 

